BRIEF-Newmont may need to cut production in Indonesia
April 25 (Reuters) - Newmont Mining Corp
* Newmont Mining Corp CEO says copper concentrate barn in Indonesia on track to fill up in the second half of May
* Newmont CEO says if storage runs out, will be forced to scale back production in Indonesia
* Newmont CEO says "cautiously optimistic" that company will get approval to export in the coming weeks, and that export duties "will be clarified" Further company coverage: (Reporting by Allison Martell)
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